Integrated Cyber-physical Contingency Analysis and Risk Estimates

Abstract

[Introduction] China’s power grid is now entering the new era of smart grid with the “power-information-business” interconnected stage, where the cybersecurity in the information system and the operational security in the power system are closely coupled, which, however, would cause severe security problem of the cyber-physical system(CPS). [Method] This paper surveyed on the cybersecurity issue of CPS and summarizes the corresponding risk estimation and management framework.Then the paper introduced the background and current status of cybersecurity, categorized the state-of-the-art methods, risk estimation framework, modeling insights, etc. This paper also fundamentally investigated both the advantages and disadvantages of each model and evaluated its development potentials. [Result] This study would help enterprises to screen and identify cybersecurity events and explore the correlation and dependency within the events, which may help researchers to exploit new interests. [Conclusion] This work induces investors to optimize their resources and budget allocations, which would also guide for security engineers to proceed with cyber risk estimates and to prepare contingency plans.

Keywords

• power cyber-physical system
• cyber-based contingency analysis
• cyber risk estimate
• power system information security
• power system engineering stability